baber/WOPTO huggingface dataset:
Patent KR-20050086720-A (KR)
Title: Watch case
Inventor: MEIER WILLY
IPC: G04B19/28
Filed: 2003-11-13
Abstract: The invention concerns a watch case comprising a middle (16), a bezel (18) mounted mobile in rotation on the middle and defining between them an annular chamber (36) and an interstice (40) opening outwards of the case, a glass (22) mounted sealed on the bezel, a sealing joint (42) interposed between the bezel and the middle and arranged in said chamber (36). The invention is characterized in that said sealing joint comprises an annular ring (44) made of a material with high elastic deformation and whereof the cross-section includes two lips (44a), one pressed against the bezel (18), the other against the middle (16) and a compressing member (48) arranged in the chamber on the interstice side, interposed between and co-operating with said lips to compress them respectively against the bezel and the middle.
Patent KR-20050092724-A (KR)
Title: Vacuum vapor-deposition apparatus and method of producing vapor-deposited film
Inventor: SASAKI NOBORU
IPC: C23C14/56
Filed: 2003-12-26
Abstract: A vacuum deposition apparatus and a vapor-deposited film manufacturing method for manufacturing vapor- deposited film by forming a vapor-deposited layer on the surface of material film. In the vacuum deposition apparatus, a synchronization means (18) sets the outer peripheral velocity v1 of a coating roll (14) and the outer peripheral velocity v2 of a feed-out side guide roll (15) to v1 = v2 so that the vapor-deposited layer on the surface of the vapor- deposited film is not rubbed against the feed-out side guide roll (15). Thus, the possibility of damage to the vapor-deposited layer can be eliminated to provide a sufficient performance to the vapor-posited layer.
Patent KR-20050095890-A (KR)
Title: Method of coding and transmitting epg data, coder and receiver
Inventor: THISSEN ROGIER L J W
IPC: H04H60/72
Filed: 2004-01-20
Abstract: EPG data regarding programs and their scheduled times are structured and/or transmitted in such a way that program and schedule records are interleaved. This scheme allows better handling by receiving devices such as embedded devices (i.e. LCD remote controls), because a more efficient reception and storage of transmitted data is possible. In particular, the receiving device can read, parse and store the downloaded EPG data on the fly as it is being received (it can start reading, parsing and storing before the complete reception of data id finished). At any time when the device would have to stop storing EPG data into persistent storage, (almost) all of the data that was stored can actually be used.
Patent KR-20050109515-A (KR)
Title: Silicone resin composition and moldings thereof
Inventor: SAITO TAKASHI
IPC: C08G77/04
Filed: 2004-03-22
Abstract: A silicone resin composition, which comprises a silicone resin comprising, as a primary component, a polyorganosilsesquioxane being represented by the formula: [RSiO 3/2]n, wherein R represents an organic functional group having a (meth)acryloyl group, and n is 8, 10 or 12, and having a cage type structure in its structural unit, and an unsaturated compound having, in its molecule, at least one unsaturated group represented by -R3-CR4=CH2 or -CR4= CH2, wherein R3 represents an alkylene group, an alkylidene group or a -OCO- group and R4 represents a hydrogen atom or an alkyl group, and being capable of radically copolymerizing with the above silicone resin, in a weight proportion of 1 : 99 to 99 : 1. The composition can provide a silicone resin which exhibits high heat resistance, high transparency and high dimensional stability and thus can be suitably used for optical applications such as a lens, an optical disc, an optical fiber, a substrate for a plat panel display, a window material for an automobile, and the like.
Patent KR-20060002900-A (KR)
Title: Propulsion system and method for optimising power supply to the cooling system thereof
Inventor: LAUKEMANN DIETER
IPC: F16D33/06
Filed: 2004-03-27
Abstract: The invention relates to a propulsion system comprising an engine and a cooling system for said engine. Said system consists of a coolant circuit, a cooling device and a fan which is associated therewith and actuated by the engine. The inventive cooling system is characterised in that a controlled clutch is arranged between the engine and fan. Said clutch is embodied in the form of an hydrodynamic clutch comprising a primary wheel and a secondary wheel which jointly form a working space fillable with a working fluid, and is provided with a fluid supply system associated with the clutch and with means influencing the transmission behaviour thereof.
Patent KR-20050120791-A (KR)
Title: Process for resolving 2,4-diamino-3,6-dihydro-1,3,5-triazines, useful for the treatment of disorders associated with insulin resistance syndrome
Inventor: MOINET GERARD
IPC: A61P33/06
Filed: 2004-04-06
Abstract: The present invention is directed towards a process for resolving a racemic amino compound derived from dihydro- 1,3,5- triazines. The invention is also directed towards the enantiomers of amino derivatives of dihydro-1,3,5-triazines and to their use for the preparation of medicaments, in particular for the treatment of diabetes and malaria.
Patent KR-20060006067-A (KR)
Title: Masked phone service with mask phone number
Inventor: WEI TSUNG HSING
IPC: H04W8/26
Filed: 2003-10-28
Abstract: The present invention is disclosed a masked phone service, which depending on phone user's original phone number to virtually create multiple new corresponding substitutive phone numbers, called mask phone numbers; to mask phone user's original phone number when on demand; by adding this new created mask phone number, therefore, to make the phone user have at least two phone numbers on single phone device so that the phone user's original phone number and the mask phone number may be separately used for his working and private time respectively, and by this way the phone user's personal privacy is then improved.
Patent KR-20060021312-A (KR)
Title: A unified receiver for layered and hierarchical modulation systems
Inventor: KOSLOV JOSHUA
IPC: H04L27/00
Filed: 2004-04-24
Abstract: A satellite receiver includes a down converter for providing a received signal and a demodulator having at least two demodulation modes for demodulating the received signal, wherein one demodulation mode is hierarchical demodulation and another demodulation mode is layered demodulation.
Patent KR-20060015617-A (KR)
Title: Drug delivery system
Inventor: GROENEWEGEN RUDOLF JOHANNES JO
IPC: A61K9/00
Filed: 2004-05-19
Abstract: The subject invention provides a drug delivery system comprising at least one compartment consisting of (i) a drug-loaded thermoplastic polymer core, (ii) a drug-loaded thermoplastic polymer intermediate layer and (iii) a non-medicated thermoplastic polymer skin covering the intermediate layer, wherein said intermediate layer is loaded with (a) crystals of a first pharmaceutically active compound and with (b) a second pharmaceutically active compound in dissolved form and wherein said core is loaded with said second compound in dissolved form.
Patent KR-20060015635-A (KR)
Title: Valve-moving device for engine
Inventor: FUJII NORIAKI
IPC: F01L1/18
Filed: 2004-05-28
Abstract: In an engine where a valve lift amount can be continuously varied, a valve-moving device, having a valve lift- varying mechanism, for an engine is capable of increasing and reducing a valve lift amount without changing a valve opening angle and is also capable of reducing a tappet clearance according to reduction in the valve lift amount. This prevents an increase in the ratio of a tappet clearance to a valve lift amount in a low valve lift condition, minimizing effects by variation of a tappet clearance and also reducing a valve seating speed in a low valve lift condition to prevent noise from being produced. Reduction in engine performance in a high valve lift condition caused by variation of a tappet clearance is prevented and a valve seating noise in a low valve lift condition is reduced.
Patent KR-20070072962-A (KR)
Title: Liquid crystal display device and method for driving the same
Inventor: CHOI MIN SUNG
IPC: G09G3/36
Filed: 2006-01-03
Abstract: An LCD device and a method for driving the same are provided to compensate for charge characteristic by individually applying gate driving voltage signals to odd-numbered and even-numbered gate lines. An LCD(Liquid Crystal Display) device includes plural gate lines(G1~G2n-1,G2~G2n), plural data lines, a voltage generator(40), and a gate driver(50). The gate lines are formed in pairs. The data lines cross with the gate lines such that two sub-pixels are defined at respective cross sections. The voltage generator includes first and second voltage generators for generating first and second gate driving voltages(Von1,Von2), respectively. The gate driver alternately and sequentially supplies the first and second gate driving voltages from the voltage generator to the gate lines.
Patent KR-20070073104-A (KR)
Title: Water flux check apparatus
Inventor: YUN DAE DUCK
IPC: G01F1/115
Filed: 2006-01-03
Abstract: A water flux check apparatus is provided to be capable of more rapidly and accurately keeping a pH by using a plurality of hole sensors rather than using one hole sensor. A water flux check apparatus(300) includes an electrolyzer, a water inlet(90), a guide(110), an impeller(130), a magnet(150), and a plurality of hole sensors(170). The guide is installed inside the water inlet of the electrolyzer. The impeller is rotatably installed on the guide. The magnet is adhered on center of the impeller. The plurality of hole sensors are installed outside of the water inlet and generates predetermined detecting signals according to the strength and direction of magnetic field which is generated by the magnet. It is preferable that a plurality of Hall sensors is installed on an external surface of a water inlet pipe at equal distance.
Patent KR-20070073325-A (KR)
Title: Fin-tube heat exchanger
Inventor: YOUN DEOK HYUN
IPC: F28F1/32
Filed: 2006-01-04
Abstract: A fin-tube heat exchanger is provided to modify shape of fins to increase contact areas for tubes, thereby improving heat exchange efficiency between the tubes and ambient air. A fin-tube heat exchanger includes fins(102) in the shape of waveform and tubes(101) in a corrugation shape. The tubes are coupled with curved surfaces of the fins in the waveform, so that linear or surface contact rather than point contact is realized between the tubes and the fins, increasing heat transmission areas between the tubes and the fins.
Patent KR-20070074165-A (KR)
Title: Method and system for providing wireless instant messaging service by using short messaging service
Inventor: PARK HYUN JOONG
IPC: H04W84/08
Filed: 2006-01-06
Abstract: A method and a system for providing a wireless IM(Instant Messaging) service by using the SMS(Short Message Service) are provided to enable message transmission/reception between an IM client terminal and a mobile terminal in real time by converting an instant message, received from the IM client terminal, into a short message, transmitting it to the mobile terminal, converting a reply short message, received from the mobile terminal, into a reply instant message, and transmitting it to the IM client terminal. If the user of an IM client terminal inputs an instant message and destination address of the instant message(S200), the IM client terminal transmits the instant message to an IM server(S202). The IM server judges whether the destination address is an MDN(Mobile Directory Number) or an MIN(Mobile Identification Number)(S204). If so, the IM server transmits the instant message to an IM gateway(S208). Receiving the instant message, the IM gateway converts it into a short message(S210). Then, the IM gateway converts the IM client terminal user's instant message ID, inserted into source address field of the short message as a source address, into the MDN or MIN of the second mobile terminal, which the IM client terminal user possesses, adds an identification code to MDN or MIN of the second mobile terminal, and transmits the short message to an SMS server(S212-S216). The SMS server analyzes destination address of the short message and transmits it to a mobile terminal corresponding to the MDN or MIN inserted as the destination address(S218).
Patent KR-20060082435-A (KR)
Inventor: OKUMURA HIRAKU
IPC: H04R3/02
Filed: 2006-01-12
Abstract: 마이크로폰 및 스피커에 접속되는 확성 장치에서, 확성 회로부는 음성 신호를 증폭하여 증폭된 음성 신호를 스피커에 입력한다.  하울링 캔슬러는 스피커에 입력되는 음성 신호와 잔차 신호에 기초하여 스피커로부터 마이크로폰으로의 귀환 전달계를 모의하는 필터 계수가 설정되는 적응 필터를 갖고, 스피커에 입력되는 음성 신호를 적응 필터로 처리하여 모의 신호를 생성한다.  잔차 신호는 마이크로폰으로부터 입력된 음성 신호로부터 모의 신호를 감산함으로써 얻어지며 확성 회로부에 공급된다.  내부 음원은 음성 신호를 발생하여 음성 신호를 스피커에 입력한다.  음원 판정부는 마이크로폰으로부터 입력된 음성 신호에, 스피커로부터 귀환한 음성 신호 이외에 외부 음원으로부터 입력된 음성 신호가 포함되어 있는지 여부를 판정하여, 해당 판정 결과에 따라서 적응 필터의 필터 계수의 갱신을 제어한다.  
       
     확성 장치, 하울링 캔슬러, 귀환 전달계, 적응 필터
Patent KR-20070077339-A (KR)
Title: Structure of multilayer electrode in flat panel display
Inventor: JEONG PYEONG SOO
IPC: H01J11/20
Filed: 2006-01-23
Abstract: A structure of a multilayer electrode in a flat panel display is provided to prevent an erroneous operation of a driving circuit by securing sufficiently an installation space of the driving circuit for driving an electrode of an electrode plate. A plurality of electrode plates(50) are disposed to form a panel and includes electrodes assigned to pixels and an effective screen part. A circuit installation region is formed in each of the electrode plates and is defined in a non-effective screen part. The circuit installation region is not overlapped with each of the electrode plates in order to secure a sufficient circuit installation space. A driving circuit is installed in the circuit installation region and is connected with the electrodes of each of the circuit plates in order to drive the electrodes.
Patent KR-20070048102-A (KR)
Inventor: LEE BYUNG KIL
IPC: F25C5/02
Filed: 2006-01-24
Abstract: 본 발명은 해수가 유동하면서 결빙되도록 하여 그 결빙되는 얼음이 일반적인 해수의 염분 농도보다 낮은 농도의 염분을 함유하도록 하여 예냉 효과가 뛰어나면서도 생선 등의 신선도를 장기간 유지할 수 있는 저염분 얼음을 제조할 수 있는 제빙기, 제빙 시스템을 제공하기 위한 것으로, 냉매 공급부로부터 공급되는 냉매를 이용하여 얼음을 제조하는 제빙기에 있어서 : 해수가 저장될 수 있는 공간을 형성하며 그 동결벽이 상기 냉매 공급부로부터 공급되는 냉매에 의하여 냉각되며 해수가 유입되는 해수 유입구가 형성되는 동결조 ; 상기 동결조의 상부 덮개에 마련되는 구동수단 ; 상기 구동수단에 연결되어 상기 동결조 내부로 삽입되며 파쇄용 커터가 마련되는 회전축 ; 상기 동결조의 하부에 호퍼 형태로 형성되어 그 하부에 상기 동결조에 저장된 해수를 배출하기 위한 해수 배출구와 상기 동결조에서 파쇄되는 얼음이 배출되는 얼음 배출구가 형성되는 하부 덮개 ; 를 포함하여 이루어지는 것을 특징으로 한다. 
       
     제빙기, 동결조, 파쇄용 커터, 예냉기, 해수 유입구, 해수 배출구
Patent KR-20070077589-A (KR)
Title: Inactivation vaccine using the gel-adjuvant adsorbed with specific antibody against antigen, complements or immunostimulants or antigen treated with specific antibody against antigen or complements
Inventor: KIM JONG MAN
IPC: A61K39/395
Filed: 2006-01-24
Abstract: A swine erysipelas inactivated vaccine and a canine pavovirus inactivated vaccine are provided to have significantly increased immunogenicity by treating a swine erysipelas inactivated antigen with a swine erysipelas specific antibody, inactivated swine complement, zymosan treated-activated swine complement, staphylococcus dead biomass treated-activated swine complement or beta-glucan absorbed gel. The swine erysipelas inactivated vaccine is prepared by adding a swine erysipelas specific antibody, in which the antibody is 1:20-80, into a swine erysipelas inactivated antigen in a ratio of 1:10 and then reacting it at a temperature of 37 deg.C for 1 hour. The canine pavovirus inactivated vaccine is characterized in that it is prepared by adding 10% of beta-glucan regarding the total canine pavovirus inactivated antigen amount into the canine pavovirus inactivated antigen.
Patent KR-20060086875-A (KR)
Inventor: TELEP ROBERT J
IPC: F02B39/00
Filed: 2006-01-25
Abstract: 터보차저 같은 많은 장치는 그 기능을 제어하는 기구를 사용한다. 예를 들어, 공압 및 전기 액츄에이터는 터보차저에서 메커니즘의 위치 제어를 위해 사용된다. 액츄에이터는 적절한 통신과 제어를 제공하기 위하여 차량 전기 시스템에 연결되어야 한다. 이 액츄에이터는 또한 센서, 전자 제어 유닛, 외부 전기 커넥터 및 내부 전기 연결부와 같은 장치의 내부 제어 및 상호접속을 필요로 한다. 전기 연결, 센서 배치 및 컨트롤러의 배치는 액츄에이터의 성능, 신뢰성 및 비용에 매우 중요하다. 이 제어 및 상호접속 시스템은 전기 연결을 위한 "빠른 접속" 성능 및 조립의 용이성을 포함하여 상기 요건을 제공할 것이다.
Patent KR-20060092049-A (KR)
Inventor: USUDA HIDENORI
IPC: B41J29/393
Filed: 2006-01-26
Abstract: 소정의 작동 압력을 유지하기 위해, 가압 펌프에 의해 기능액 탱크를 가압하여, 상기 기능액 탱크로부터 기능 액적을 토출하는 기능 액적 토출 헤드에 기능액의 가압 공급을 행하는 가압 공급 동작과, 묘화 영역에 세트된 묘화 대상물에 대하여 상기 기능 액적 토출 헤드를 상대적으로 이동시키면서, 상기 기능 액적 토출 헤드를 구동함으로써 상기 기능 액적을 토출시켜 묘화를 행하는 묘화 동작을 실행하는 액적 토출 장치의 제어 방법에 있어서, 상기 기능액 탱크 내의 압력이 상기 작동 압력의 하한 압력 이하인지의 여부를 검출하는 압력 검출 공정과, 상기 기능액 탱크 내의 압력이 상기 하한 압력 이하일 때에, 상기 기능 액적 토출 헤드가 상기 묘화 동작 중인지의 여부를 확인하는 묘화 동작 확인 공정과, 상기 묘화 동작 중이 아니라고 확인되었을 때에, 상기 기능액 탱크를 상기 작동 압력의 상한 압력까지 가압하는 제 1 가압 제어 공정을 구비한 것을 특징으로 하는 액적 토출 장치의 제어 방법을 제공한다. 
       
     액적 토출, 잉크젯 프린터, 타이밍 제어, 컬러 필터, 묘화 동작
Patent KR-20070078308-A (KR)
Title: Method for scheduling data traffic in wireless communication system
Inventor: CHO HEE KWUN
IPC: H04L12/56
Filed: 2006-01-26
Abstract: A method for scheduling data traffic in a wireless communication system is provided to improve an overall throughput by controlling a MAP overhead. When data traffic of the first reference level or greater is generated, radio resources are preferentially allocated to a mobile station with a good channel state. When data traffic smaller than the first reference level is generated, radio resources are preferentially allocated to mobile stations, starting from a mobile station which has not allocated the radio resources for the longest time. When a control information amount according to allocation of data traffic exceeds the second reference level, data traffic with the same MCS(Modulation and Coding Scheme) level are collected at a single data traffic allocation region and radio resources are allocated.
Patent KR-20070080336-A (KR)
Title: Systemt and method for servicing a monitor picture using a mobile communication terminal for dmb
Inventor: KWON HYOC SUN
IPC: H04B1/40
Filed: 2006-02-07
Abstract: A monitoring image service system using a DMB(Digital Multimedia Broadcasting) mobile communication terminal and a method therefor are provided to allow a user to know conditions of a personal space of the user in real time in a desired space and time by allowing the DMB mobile communication terminal to receive image data photographed from a camera installed in the personal space of the user. A DMB mobile communication terminal(100) has a DMB module(100a) for receiving DMB. When a user channel service mode is entered, the DMB mobile communication terminal(100) provides intrinsic identifier information of the DMB module(100a) and the DMB mobile communication terminal(100). At least one or more cameras(145) registered in the intrinsic identifier information of the DMB mobile communication terminal(100) are registered in a monitoring server(140). The monitoring server(140) provides image data photographed in the cameras(145) to a mobile communication system on the basis of the intrinsic identifier information. A DMB service server(130) assigns a user channel to the DMB mobile communication terminal(100) by using the intrinsic identifier information of the DMB module(100a). The DMB service server(130) requests image data from the monitoring server(140) through the mobile communication system by using the intrinsic identifier information of the DMB mobile communication terminal(100), and provides the image data received from the monitoring server(140) to the DMB mobile communication terminal(100) through the assigned user channel.
Patent KR-20070080741-A (KR)
Title: Cyclometalated transition metal complex and organic electroluminescence device using the same
Inventor: BYUN YOUNG HUN
IPC: H05B33/00
Filed: 2006-02-08
Abstract: A cyclometalated transition metal complex compound is provided to efficiently emit phosphorescence in the red light range through metal to ligand charge transfer(MLCT) after intersystem crossing(ISC) by including a new supplemental ligand having a carboxyl group linked to a hetero-ring. And an organic electroluminescence device prepared by the transition metal complex is provided to provide improved luminescent properties such as high luminescent efficiency and outside quantum efficiency. The cyclometalated transition metal complex compound is represented by the formula(1), wherein M is a transition metal, a group represented by the structural formula(1-a) is a first mono-anionic bidentate chelating ligand, a group represented by the structural formula(1-b) is a second mono-anionic bidentate chelating ligand, each X and Y is independently C, S, O or N, each CY1, CY2 and CY3 is independently aromatic or aliphatic ring, and n is 1 or 2. In the organic electroluminescence device including an organic film between a pair of electrodes, the organic film includes the cyclometalated transition metal complex compound of the formula(1).
Patent KR-20070082390-A (KR)
Title: Drying machine and control method as the same
Inventor: KIM MYOUNG JONG
IPC: D06F58/20
Filed: 2006-02-16
Abstract: A clothes drier and a method for controlling the same are provided to control the clothes drier by measuring the pressure of the air discharged through an exhaust duct. A clothes drier includes a case(10), a drum(30), an exhaust gas(71), a blower, a exhaust duct, and a pressure sensor(100). The case forms the appearance of the clothes drier. The drum is installed in the case and clothes to be dried are introduced into the drum. The exhaust duct is connected to the drum so as to form an exhaust passage of the air from the drum to the outside of the case. The blower flows the air so that the air can be exhausted from the drum through the exhaust gas and is provided in the exhaust gas. The pressure sensor is installed in the exhaust duct to measure the pressure in the exhaust gas.
Patent KR-20070045886-A (KR)
Inventor: GO JUNG NAM
IPC: B63B1/08
Filed: 2006-02-17
Abstract: 본 발명은 고속형 파워보트의 선체에서 계단 형태의 단(stepped)을 적용한 선박중에 워트 제트 추진기의 장착도 가능하도록 고려하여 후미부분 저면을 평면판으로 하고 양측면으로 계단 형태의 단을 형성한 선체의 선미 선저의 선형구조에 관한 것이다. 
     본 발명은 기존의 선체(10)에서 있어서, 워터 제트 추진기의 임펠러 앞 흡입구로 유입되는 선체(10)의 선미측 선저를  평판면(20)으로 형성하고  평판면(20)을 제외한 그 양 측면으로 단(30)(31)(40)(41)을 형상하여서 됨을 특징으로 한다. 
       
     평판면 		단
Patent KR-20060029261-A (KR)
Inventor: KIM MOON CHAN
IPC: B01J21/00
Filed: 2006-03-13
Abstract: 내화성 무기산화물로 알루미나 고체 분말상에 귀금속과 전이금속이 담지된 촉매를 건조하고 300℃ ∼ 600℃ 사이에서 소성하고 환원시킨후 100℃ 이하로 상온까지 강온후 과산화수소수를 흘려주어 300℃ ∼ 600℃까지 승온하면서 촉매의 구조적 변화를 일으켜 촉매의 활성을 증가시키며, 휘발성유기화합물을 저온에서 완전히 산화하여 이산화탄소와 물로 변환시키는 나노촉매 및 제조방법 
     저온, 휘발성유기화합물, 과산화수소, 완전산화
Patent KR-20060030886-A (KR)
Title: 바닥면이 탄소성형체로 구성된 주방용기
Inventor: BAEK BONG KI
IPC: A47J36/02
Filed: 2006-03-22
Abstract: 본 발명은 주방용기 본체의 바닥면이 탄소성형체로 구성되고, 상기 탄소성형체의 가장자리 상하부면의 일정부분을 금속재의 주방용기 본체가 감싸는 형식으로 고정하게 구성되되, 주방용기 본체에 매입되는 탄소성형체의 가장자리 하부면 끝에는 가장자리를 따라 홈이 형성된 것이 특징인 바닥면이 탄소성형체로 구성된 주방용기에 관한 것이다. 
       
     탄소성형체, 알루미늄, 주방용기, 주조
Patent KR-20060113521-A (KR)
Title: Magnesium hydroxide particle, manufacturing method thereof and resin composition containing the particle
Inventor: KAWASE ATSUYA
IPC: C01F5/14
Filed: 2006-04-27
Abstract: Provided are a fire retardant of magnesium hydroxide which has excellent fire retardancy and improved filling into resin, and which is useful as a filler of resin for semiconductor bag, and a method for preparing the magnesium hydroxide with a low cost. The magnesium hydroxide particle has a crystal appearance of hexagonal cylinder which comprises hexagonal base having two top and bottom sides parallel to each other, and 6 circumferences formed between the bases. The particle is prepared by method comprising the steps of: adding a magnesium oxide powder having a crystal particle size of 50x10^-9 m or more which is obtained by pulverizing and screening raw magnesium oxide, to warm water of 100 deg.C or less; hydrating the magnesium oxide with high shear stirring; and then screening, washing, and drying the obtained solid. The resin composition comprises epoxy resin, hardener, mineral filler, and the magnesium hydroxide particle.